Question

which of the statements are examples of a correlation? students who attend lecture regularly and higher grades on exams an increase in temperature and an increase in the amount of ice cream sold a persons age and a persons ethnicity an increase in humidity and the distance between two cities

Explanation:

A correlation shows a relationship between two variables. Regular lecture - attendance and higher exam - grades may be related as more knowledge is likely gained through attending lectures. Higher temperatures usually lead to more ice - cream sales as people prefer cold treats in warmer weather. A person's age and ethnicity are not related variables as ethnicity is determined by cultural and genetic factors not related to age. Humidity and the distance between two cities have no inherent relationship.

Answer:

Students who attend lecture regularly and higher grades on exams
An increase in temperature and an increase in the amount of ice cream sold